八年級(jí)下Unit7SectionA課件1(1a2d)

Unit7SectionA11a—2d2)三位數(shù)以上的數(shù)

如：16,250,164sixteenmillion,twohundredandfiftythousand,onehundredandsixty-four多位基數(shù)詞讀法1)101~999的三位數(shù)由“百位數(shù)＋and+兩位數(shù)組成”。

如：325threehundredandtwenty-five從右到左三逗開一逗是千二逗百萬三逗是十億thousand

million

billion/θ’a?z?nd//‘m?lj?n//‘b?lj?n/Canyoureadthem?9,600,0001,0256,6718,844.43Icanreadthem!9,600,0001,0256,6718,844.43

onethousandandtwentyfiveeightthousandeighthundredandfourty-fourpointfourthreesixthousandsixhundredandseventy-oneninemillionsixhundredthousandThesecondlongestriverintheworld-Doyouknowitsname?-ItisAmazon.-Doyouknowhowlongitis?Doyouknowtheseinterestingplaces?['?m?z?n]

亞馬遜河

-It’sabout6,500kilometerslong.the

highestmountainintheworld.Howhighisit?Itis8,844metershigh.QomolangmaQomolangma[‘t??um?ulɑ:?m?]

8844.43米珠穆朗瑪峰Itisabout9,600,000squarekilometersinsize.TheSahara1.大小[C][U]What’sthesizeofthepark?2.尺碼,號(hào)[C]Thisshirtisyoursize.[s?’hɑ:r?]

撒哈拉沙漠

9,600,000squarekilometersTheSaharaTheSaharaisthebiggestdesertintheworld.sizenHowbigistheSahara?Theworld’sdeepestsaltlakeHowdeepistheCaspian?Itis1,025meters

deep.TheCaspianSeaTheCaspianSea[‘k?spi?n]

里海

1,025metersTheNileTheNileisthelongestriverintheworld?Itismorethan6,600kilometers

long.Itrunsthrough9countries.TheNile[na?l]

尼羅河

6,600kilometersHowlongistheNile?ThelongestriverinAsia.TheYangtzeRiveristhelongestriverinAsia?

Itis6,300kilometers

long.TheYangtzeRiver['j??tsi]

長江

TheYangtzeRiver6,300kilometersHowlongistheYangtzeRiver?1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershighQomolangmaTheSaharaTheNileTheCaspianSeaQomolangma

is

8844.43meters

high.TheSahara

is…TheCaspianSea

is…TheNile

is…1aA:

HowhighisQomolangma?B:It’s8,844metershigh.ReadandfindA:HowdeepistheCaspianSea?B:It’s1,025metersdeep.A:HowlongistheNile?B:It’s6,671kilometerslong.A:HowbigistheSahara?B:It’sabout9,600,000squarekilometers

insize.如何描述物體的長寬高？長寬高表達(dá)方式結(jié)構(gòu)1：“數(shù)詞+數(shù)量單位+形容詞（long,wide,tall,deep…）”YaoMingisover2meterstall.Theriveris50meterswide.It’s8,844metershigh.它有8,844米高。結(jié)構(gòu)2：“基數(shù)詞+數(shù)量單位+in+名詞（length;width;height;depth…）twometerslong=twometersinlength2米長twofeethigh=twofeetinheight.2英尺高關(guān)注.數(shù)詞+squarekilometer(s)數(shù)詞+squaremeter(s)

insizePractice1.

HowhighisQomolangma?It’s8,844metershigh.2.HowbigistheSahara?It’sabout9,600,000squarekilometersinsize.3.How

deepistheCaspianSea?Itis1,025metersdeep.4.HowlongistheNile?It’s6,671kilometerslong.

Listenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongestPlaySectionA1b.swfGuess1b

Qomolangmaishigherthananyothermountainintheworld.珠穆朗瑪峰比世界上任何山都高.

“anyother+可數(shù)名詞的單數(shù)”

其他任何一個(gè)【用法1】指在同一范圍內(nèi)除了某人或某物以外的其他任何人或物.常用于比較級(jí)。ShanghaiisbiggerthananyothercityinChina.【用法2】

“anyother+可數(shù)名詞單數(shù)”

與“theother+可數(shù)名詞復(fù)數(shù)互換，也可用最高級(jí)形式表達(dá)。Lucyismorecarefulthananyother

studentinherclass.=Lucyismorecarefulthantheother

studentsinherclass.=Lucyisthemostcarefulstudentinherclass.

但是，如果比較雙方不屬于同一類別或同意范疇，句中則不用other.①ShanghaiislargerthananycityinHebeiProvince.②Herubsfasterthananygirlinhisclass.③TheYangtzeRiverislongerthananyriverinJapan.④TomgetstoschoolearlierthananystudentinMike’sclass.Whatis

thehighest

mountainintheworld?Whatis

thelongest

riverintheworld?Whatisthebiggestdesertintheworld?Whatisthedeepestsaltlakeintheworld?Talkaboutthesepicturesinpairs.QomolangmaTheSaharaTheNileTheCaspianSea1c

ishigherthananyothermountainintheworld.It’s8,844.43metershigh.QomolangmaWhatdoyouknowabouttheseplaces?TheSaharaisthebiggestdesertintheworld.It’sabout9,600,000squarekilometersinsize.TheCaspianseaisthedeepestofallthesaltlakes.TheNileIt’s6,671kilometerslong.It’s1,025metersdeep.isthelongestriverintheworld.1b.+1a.1b.+1a.1b.+1a.TheYellowRiverislong.TheYangtzeRiverisalot

_______thantheYellowRiver.TheNileis____________ofall.TheYangtzeRiverisnot____long____theNile.=TheYangtzeRiverisnot_______thantheNile.theNiletheYangtzeRivertheYellowRiver6,6706,3005,500longerthelongestMakesentencesusingtheinformationintheforms.ExerciseasaslongerMountTaiishigh.MountHuangisalittle

_______than

MountTai.Qomolangmais____________ofall.MountTaiisnot___high___Qomolangma.=MountTaiisnot_______thanQomolangma.higherthehighestasashigherQomolangmaMountHuangMountTai8,8481,8641,5451.ThepopulationofSingaporeislarge.2.ThepopulationofMalaysiaismuch______thanthatofSingapore.3.ThepopulationofChinais_______ofall.4.ThepopulationofSingaporeisnot_____large____thatofChina.5.ThepopulationofSingaporeisnot_____thanthatofChina.SingaporeMalaysiaChina4,000,00020,000,0001300,000,000largerthelargestasaslargerListenandnumberthefacts[1-4]inthe

orderyouhearthem.__TheYangtzeRiverisabout_____kilometerslongandtheYellowRiveris________kilometerslong.__Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.__Chinaisover_____yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven___yearsold.__ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.14322a___TheYangtzeRiverisabout_______kilometerslongandtheYellowRiveris____kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salot

biggerthanthepopulationoftheUS.___Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven___yearsold.___ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.

Listenagainandfillintheblanksin2awiththenumbersinthebox.

6,3005,0005,464300

6,3005,46442135,0003002bExplainationChinahasthebiggestpopulationintheworld.①population“人口數(shù)量”作主語時(shí),謂語動(dòng)詞用

單數(shù)Thepopulation

ofthiscity

issixmillion②當(dāng)主語時(shí)“人口的百分之幾、幾分之幾”時(shí)，謂語動(dòng)詞常用復(fù)數(shù)形式。

70%ofthepopulationinChinaarefarmers

③表示人口"多"或"少"時(shí),用"large"或"small"

ThepopulationofChinaisverylarge.中國人多

④指代population的代詞要用that。ThepopulationofIndiaismuch____than____ofRussia.A.small,thatB.larger,itC.smaller,thatD.bigger,thatD⑤詢問人口數(shù)量Howlarge…?

“

whatisthepopulationof…?”

HowlargeisthepopulationofCanada?

WhatisthepopulationofCanada?加拿大的人口有多少?⑥表示“某地有多少人口‖時(shí)，常用…h(huán)asapopulationof…句型Chinahasapopulationofmorethan1.3billion.It’salotbiggerthanthepopulationoftheUS.（中國）人口比美國多得多。(1)alot很多，非常做副詞短語，修飾動(dòng)詞，放在動(dòng)詞之后。相當(dāng)于verymuch.Itusuallyrainsalotatthistimeofyear.Heknowsalotaboutthisevent.(2)alot…很多；much…得多（修飾比較級(jí)）形容比較級(jí)前可用much,even,alittle,alot,abit等修飾詞表示程度。Myclassroomisalittlebiggerthanyours.HisEnglishisalotbetterthanmine.IthasamuchlongerhistorythantheUS.（中國）比美國歷史長得多。I’malittleolderthanTom.

Keyphrases1.平方千米2.在面積上3.所有的咸水湖中最深的4.世界上最高的山脈5.最多的人口6.比…大許多7....的人口8.一段比…長的多的歷史9.和…一樣大10.最古老的國家之一11.比…老得多squarekilometersinsizethedeepestofallthesaltlakes.the

highestmountainintheworld.thebiggestpopulationthepopulationoftheUSalot

biggerthanamuchlongerhistorythanasbigasoneoftheoldestcountriesmucholderthan

Makeconversationsusingtheinformationin2a.PracticeA:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.it’smucholderthanmycountry.A:DidyouknowthatYangtzeRiveristhelongestriverinChina?B:Yes,Idid.It’s6,300meterslong.B:Wow!That’slong!2c2dReadtheconversationandanswerthequestions1.What’stheconversationabout?2.HowlongistheMingGreatWall?1.It’saboutatourtotheMingGreatWall.2.It’sabout8,850kilometerslong.Readtheconversationandanswerthequestions:3.Whichisthebiggestman-madeobjectsintheworld？4.WhichisthemostfamouspartoftheMingGreatWall?TheGreatWall.Badalingpartofthewall.2dRole-playtheconversation.Guide:Feelfreetoaskmeanythingontoday’sGreatTourist1.Howlongisthewall?Guide：Ah,themostpopularquestion!Ifwe’reonlytalkingaboutthepartsfromtheMingDynasty,it’sabout8,850kilometerslong.Thismakesit

thelongestwallintheworld.Tourist2:Wow,that’samazing!Whydidtheancientemperorsbuildthewall?Guide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it’squitetallandwide.AsfarasIknow,therearenoman-made

objectsasbigasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,it’sthemostfamouspart.Walltour.PlaySectionA2d.swf正如你所看到的據(jù)我所知

人造的

明朝

隨便，輕松保護(hù)他們的那部分的國土

古代的皇帝

2dGuide:________askmeanythingontoday’sGreatTourist1.How____isthewall?Guide：Ah,_____popularquestion!Ifwe’reonly_______theparts____theMingDynasty,it’sabout8,850kilometers_____.This____it________wallintheworld.Tourist2:Wow,that’s_______!Whydidthe____buildthewall?Guide:Themainreasonwas___protecttheir___ofthecountry.____youcansee,it’squitetalland____.________Iknow,thereareno______asbig___this.Tourist3:IsBadalingpart____theMingGreatWall?Guide:Yes,it’s_____famouspart.1.Feelfreetoaskmeanythingontoday’sGreatWalltour.在今天的長城游中，大家盡管問我任何問題，不要拘束。Languagepointsfeelfree是英語口語中一個(gè)常用表達(dá)。若有人讓你feelfreetodosomething，就是讓你無需拘束，只管按照自己的意愿去做某事。feelfreetodosth隨意做某事CanIuseyourbathroom?Yes,feelfree.FeelfreetotalkwithMr.Lee,please.請(qǐng)盡管和李先生談。2ancientadj.古代的古老的Mygrandmotheroftentellsmeoldancientstories.3protectv.保護(hù)protect…from/against保護(hù)…，使不受Sunglassesareusedforprotectingoureyesfromthesun.4.AsfarasIknow,therearenoman-made

objectsasbigasthis.據(jù)我所知，再?zèng)]有像它這樣大的人造物體了。man-made為合成形容詞，意為“人造的”。與-made復(fù)合而成的形容詞有：hand-made(手工制作的)ho